Auxiliary calling dial



May 2, 1933. A. STOEGER AUXILIARY CALLING DIAL Filed Oct. 11, 1932 R 5T0 mr 3 N m A BY 4 I .v

ATTORNEY Patented May 1933' UNITED sT TEs nu'rousronona, or rimsmims'r,NEW YORK' PATENT OFFICE I AUXILIARY- CALIiING DIAL o, j Applicationfiled October 11,1932. Serial No. 637,251. I

The invention relates to calling devices as utilized in automatictelephone instrufmenfts and embodying a fixed number plate over which isadapted to be oscillated a ro- 5 tatable calling dial or finger wheelprovided with a series of circumferentially disposed digitalperforations in which isinserted selectively the finger of an operatorfor turning the dial when making a call until said finger contacts witha rigidlysecured finger-stop projecting inwardly over the dial. Thepresent invention has for an object the provision of'an auxiliarycalling dial 1 or templateiiadapted'to be temporarily located over theusual dial whenmaking a call and provided with such perforations only asare required to make a particular predetermined call, therebyavoiding'con'fusion and errors as well as the necessity of firstascertaining the particular call'numfiber. No memorizing of a number isrequired with the use of the novel auxiliary dial for in operating thecalling device with the sameit is necessary merely to follow aparticular sequence noted thereon.

A further object of the invention resides in theprovision of a member ofthe aforesaid nature Which may be readily applied to and removed fromthe usual calling dial of V the telephone instrument; and when not inuse may conveniently stored or filed for further use. i

' Still another object of the inventionre sides in the provision'of asimple and inexand which, if desired, may serveg alsoas an advertisingmedium, andbe readily shipped finger stop associated with the callingdevice as well as to serve as a locating means for properly-fconnecting, temporarily the disk with the said calling dial. This mayA550 be effected; by'depressingsepa p n ing, in which:

cal section of the same andon an enlarged pensive member of theaforesaid nature, a

a same is provided Withaninwardly directed" slots to allow: of fittingthe disk over the of the disk'or by providingdownwardly ex 7 tendingflanges therefrom designed to fit into the terminal digital perforationsof the dial so that if the auxiliary dial be rotated, the calling dialwill follow therewith. There is furthermore provided in the said disk aplurality of digital: perforations representing, however, only theparticular per? forations required for calling a predetermined'telephonenumber,'and these arecircumferentially disposed inthe disk in'such amanner as to register with the corresponding'digital perforations, ofthe calling. diskproper, Itwill therefore not be necessary injmakingacall'for the calling party to seek out from the calling dial variousletters and numbers, but merely to operate said disk through insertionofa finger successively in the perforations provided in the'disk and inthe Sequence indicated adjacently to said openings. a

The nature of the invention, however, will best be understood whendescribed in connection with the accompanying draw- 1 Fig; 1 isfa planview illustrating the novel disk applied to the usual dialing member ofan automatic telephone instrument.

Fig. 2 is a part front elevationand vertiscale, the section being takenon the line 22, Fig'l of the drawing.

Fig. 3 is aplan view offth'e novel au xiliary calling dial. Y

Fig. {1 isa vertical section through the calling" dial, and illustratesa modification in the locating and connecting means for the 'twoidials,is v Fig. 5-is aplan view of theauxiliary calling. dial, andillustratesafurther modifica- 390 bearing, element 11 over which ismounted for oscillation about the axis'of said element the finger wheel[or dial 12.1 This dial is provided .with' a central raised" portion orcard-holder ,13 and a series of circumferentially'disposed perforations14 which 'register with and through which are visible correspondinglydisposed characters of the character-bearing element, as is wellunderstood. In the usual operation of such sending apparatus, it isnecessary first to ascertain the particular letter and numbercombination of the station to be called and to then correspondinglyselect the perforations of the calling dial, rotating the dial througheach perforation select-ed until contact is had with a finger-stopmember 15 which projects inwardly over the surface of the dial.

In accordance with the present invention, an auxiliary dial is preparedwith only such perforations as are required for the particular numberdesired; and, as indicated in the drawing, the auxiliary dial 20 is inthe nature of a circular disk of light metal, such as aluminum, and ofsubstantially the same diameter as the calling disk 12 so as to clearthe vertically projecting shank of the fingerstop 15.

A'disk 20 may also be provided with a central cupped or cap portion 21designed to fit over the card-holder 13 which then affords a guidetherefor. Furthermore, a slot 22 is directed inwardly from thecircumference of the disk to accommodate said finger 15 and permit thedisk to be passed thereover to rest upon the surface of calling dial 12and move freely under said stop in calling. In order to secure theproper registry of disk 20 with reference to calling dial 12 depressedportions 23 and 24 are provided upon opposite sides of slot 22 to fitthe correspondingly positioned terminal perforations of the series ofcircumferentially disposed perforations 14.

In many instances, these particular end portions will not enter into thecalling operations and the bottoms of said depressions need not,therefore, be stamped out. However, in the event that such perforationor perforations should be required in making up of the callingcombination of perforations, a flange 25 may be turned down from thedisk, as indicated in Fig. 1 of the draw ing, leaving a throughperforation 26 thereat.

In making up the required combination of calling perforations, the samewill be positioned variously circumferentially over the disk 20, forexample, as indicated at 26. 27, 28 and 29, at which points theseperforations are provided to register with the correspondingperforations of the calling disk 12 required for sending the particularnumber in question. Provision is made on the disk 20. also, forindicating to the calling party the particular sequence in which theperforations 26, 27, 28 and 29 are to be used, for example, by means ofthe numbers 1. 2, 3. etc. printed or otherwise applied to the uppersurface of the disk, as indicated.

When, therefore, an auxiliary disk has been located over the callingdisk, it will be necessary merely to operate the same through theperforations thereof and the registering perforations of the callingdisk in the particular succession indicated, the calling disk followingthe auxiliary disk and transmitting the proper impulses. After the callhas been made, the auxiliary disk may be readily lifted off and storedor filed away for future use.

In case the auxiliary dials are made up for general sale, a continuoussuccession of perforations, comprising all of the possible combinations,may be provided in the disk circumferentially thereof and all coveredover with some readily puncturable mate rial, as heavy paper. Forexample, reference being had to Fig. 5, the disk 30 has all of therequired perforations 31, 32, 33, 34, 35, 36, 37, 38, 39 and 40 foreffecting any desired combinations; and the same are all originallycovered by a sheet of paper 41 which may be pasted over the top of saiddisk. The particular combination desired is then made therefrom bypuncturing through at the necessary perforations, for example, at theperforations 32, 33, 34 and 36, the remaining ones continuing covered.

I claim:

1. An auxiliary calling device for the calling apparatus of automatictelephones, comprising a circular disk bearing indicia and provided withmeans for engaging a perforation of the apparatus dialing wheel and withan inwardly directed slot to pass the finger stop of the apparatuswhereby said disk when applied to the dialing wheel may rotatetherewith, and said disk having a plurality of perforations less thanthe total number of perforations of the dialing wheel, adapted forregistry with predetermined perforations thereof and associated with theindicia of the disk.

2. An auxiliary calling device for the calling apparatus of automatictelephones, comprising a circular disk bearing indicia and ofsubstantially equal diameter with the dialing wheel of the apparatus,said disk being provided with means for engaging a perfora tion of theapparatus dialing wheel and with an inwardly directed slot to pass thefinger stop of the apparatus whereby said disk when applied to thedialing wheel may rotate therewith, and said disk havinga plurality ofcircumferentially disposed perforations less than the total number ofperforations of the dialing wheel, adapted for registry withpredetermined perforations thereof and associated with the indicia ofthe disk.

3. An auxiliary calling device for the calling apparatus of automatictelephones, comprising a circular disk with cupped central portionadapted to fit ov'er thecardholder of the calling pparatus and'withmeans for a I it i V paratus and .with an inwardly directed slot topassthe finger stop of the apparatus I 0' whereby said disk whenapplied tosaid dial determined perforations thereof and assoeiatediwith theindicia of the disk.-

engaging a perforation I of the apparatus dialing wheel and with aninwardly directed slot to pass the finger stop of the ap t whereby saiddisk when applied to the dialing wheel may rotate therewith, and saiddisk having a plurality of perforations adapted. for registry withpredetermined perforations of the dialing ,whee1.-

a 4. An'auxiliary calling device for the call ing apparatus of automatictelephones, .comprisinga circular disk bearing indicia'and havingdownwardly extending elements adapted for engagement with theterminalperforations of the dialingwheel of the apingo wheel may'rotatetherewith, and said disk having a plurality of perforations less H thanthe total number of perforations of the.

dialing wheel, adapted for registry-with-pre- 5. An auxiliarycallingdevice for the calling apparatus of automatic telephones, coin prising acircular disk with cupped central portion. provided with indioia andadapted a to fit over the cardholder of the calling apparatus and withmeans for engaging a perforation of the apparatus dialing wheel and withan. inwardly directed slot to pass the;

- finger stop of the apparatus whereby said disk whenapplied to thedialing wheel may rotate therewith, and said disk having a plu ralityof. perforations adapted for registry with predetermined perforations ofthe dialing wheel and associated with the indioia upon the cuppedportion of the disk.

In testimony whereof I afiix my signature. i

ANTON STOEGER.

